frontend/src/styles.css

:root {
  --climas-blue: #1f4e79;
  --climas-accent: #4ea8dc;
}

* { box-sizing: border-box; }
body { margin: 0; }

.header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px 24px;
  background: #eef2f8;
  border-bottom: 3px solid var(--climas-accent);
  flex-wrap: wrap;
}
.header .brand { height: 52px; width: auto; }
.header .book { height: 64px; width: auto; border-radius: 3px; box-shadow: 0 1px 3px rgba(0,0,0,0.18); }
.header .subtitle {
  flex: 1;
  min-width: 200px;
  border-left: 1px solid #cfd6e2;
  padding-left: 16px;
}
.header .climas { height: 42px; width: auto; }

@media (max-width: 600px) {
  .header {
    gap: 10px;
    padding: 8px 12px;
  }
  .header .brand { height: 36px; }
  .header .book { height: 44px; }
  .header .climas { height: 28px; }
  .header .subtitle {
    order: 99;
    flex-basis: 100%;
    border-left: none;
    padding-left: 0;
  }
}